08. Practice - Using Cryptography

Using the Cryptography Python Package

Python has a useful package called Cryptography that implements encryption for us. We've given you some example code in a notebook below and enough information to answer the questions following the notebook. If you get stuck, refer to the package documentation .

Workspace

This section contains either a workspace (it can be a Jupyter Notebook workspace or an online code editor work space, etc.) and it cannot be automatically downloaded to be generated here. Please access the classroom with your account and manually download the workspace to your local machine. Note that for some courses, Udacity upload the workspace files onto https://github.com/udacity , so you may be able to download them there.

Workspace Information:

  • Default file path:
  • Workspace type: jupyter
  • Opened files (when workspace is loaded): n/a

Try it Yourself!

For the following exercises you should use this key: 

key=b'8cozhW9kSi5poZ6TWFuMCV123zg-9NORTs3gJq_J5Do='

Decode the Following Message

QUESTION:

Use the included notebook and key above to decode this message: 

message = b'gAAAAABc8Wf3rxaime-363wbhCaIe1FoZUdnFeIXX_Nh9qKSDkpBFPqK8L2HbkM8NCQAxY8yOWbjxzMC4b5uCaeEpqDYCRNIhnqTK8jfzFYfPdozf7NPvGzNBwuuvIxK5NZYJbxQwfK72BNrZCKpfp6frL8m8pdgYbLNFcy6jCJBXATR3gHBb0Y='

SOLUTION:

NOTE: The solutions are expressed in RegEx pattern. Udacity uses these patterns to check the given answer

Encrypt a String

QUESTION:

Use the included notebook and key above to encrypt this message: 

message = b'encrypting is just as useful'

SOLUTION:

NOTE: The solutions are expressed in RegEx pattern. Udacity uses these patterns to check the given answer

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